APA (7th ed.) Citation

Padel, U., Twidale, R., & Porter, J. (1992). HIV education in prisons: A resource book. London: Health Education Authority.

Chicago Style (17th ed.) Citation

Padel, Una, Rose Twidale, and John Porter. HIV Education in Prisons: A Resource Book. London: Health Education Authority, 1992.

MLA (8th ed.) Citation

Padel, Una, et al. HIV Education in Prisons: A Resource Book. London: Health Education Authority, 1992.